Is it effective to promise not to give a bride price by SMS?

It's useless According to the Civil Law, the short message promise is an oral promise, and no agreement or contract has been signed, so it has no legal benefits, so the short message promise not to be a bride price is invalid. The bride price refers to the money and goods paid by one party (mainly the man) and his relatives to the other party (mainly the woman) and his relatives according to the custom.